Registering mechanism for range-finders.



J. G. HANKS. DECD.

E. P. BROWN. ADMINISTRATRIX.

REGISTERING MECHANISM FOR RANGE FINDERS.

APPLICATION FILED OCT. 25, I9l5. 1,286,608. Patented Dec. 3, 1918.

2 SHEETSSHEET I.

1. 6. HANKS. DECD.

E- P. BROWN. ADMINISTRATRIX.

REGlSTERlNG MECHANISM FOR RANGE FINDERS.

APPLICATION FILED OCT. 25. I9l5- 1,286,608. Patented Dec. 3, 1918.

2 SHEETS-SHEET 2- Fi [1-4. p/ 69 60 m ll 67 0| 0] o 6? 74 65 O 5 O v nl Z 6% UNITED STATES PATENT OFFICE.

JOHN G. HAN-KS, DECEASED, BY ELIZA 1?. BROWN, ADMINISTRATRIX, F OAKLAND,

CALIFORNIA; SAID HANKS ASSIGNOR TO CALIFORNIA RANGE FINDER COM- PANY, OF OAKLAND, CALIFORNI-A, A CORPORATION OF ARIZONA.

REGISTERING MECHANISM FOR RAN GE-FINDERS.

Original applicationflled December 17, 1907, Serial No. 406,915. Divided and thismpplication flied 25, 1915. Serial No. 57,887.

To all whom it may concern.

Be it known that I, ELIZA P. BROWN, :1

' citizen of the United States, residing at Oakland county of Alameda, and State of Cali-- forma, admlnistratrix of the estate of JOHN G. HANns, late a citizen of the United States, deceased, do hereby make application for patent on certain new and useful eating mechanism; and

disks are Improvements in Registering Mechanism for Range-Finders, invented by the said JOHN G. Harms, of which the following is a specification.

, This invention relates to an improvement 1n registering mechanism for range finders, and 1s a divisional art of application for Letters Patent, filed deceased, December. '17, 1907 Serial No. 406,915. 1

In the accompanying drawings F1gure 1' is a view indicating the reading mechanism, showi the scales by which angles are indicate the front cover being removed; i 1

Fig. 2 is a horizontal longitudinal sectional View through the line 2-2 on Fig. 1;

Fig. 3 is an enlarged plan view of the tangent-screw and connected parts for turning and adjusting the movab e telescope, also of. the case containing the reading or indi- Fig. 4 is an enlarged side elevation partly in'sectlon of the movable telescopemountings and means of adjusting the same. 7

The mechanism consists of a lurality of ,rotative disks 82 83"and 84 o graduated sizes and concentrically mounted, as shown, and provided around their outer edges with scales to denote revolutions and driven. 4 v

The rear or larger disk 82 is driven b lpitch-chain 85 that'connects the wheel 8 eyed onthe main spindle 74 with a pinion '88 attached to the disk 82, its'size being so proportioned to the wheel'87 that the t i 82' indicates fourths of revolutions of the spindle '74, that is to say the former makes four revolutions to one of the latter. The disk 82' is marked with three hundred and sixty divisions, corresponding to degrees I pfa circle as shown in the. drawings.

too hed wheel 86, is geared-t0 the Spindle 74 The second disk 83, attached to the Specification of Letters Patent.

by John G.,Hanks,

parts of revolutions of the spindle 74 to which these geared, and by which they are Patented Dec. 3, 1918.

October termediate wheel 94 and thepinion 97 mak-' ing the proportion-of revolutions of this disk to that of the spindle 74 as thirty-six to'one, each figure or division on its scale representing one revolution of the spindle 74, or as it may be called, one unit of movement of the 'arm' 8 and of the telescope 3.

. While this telescope may be mounted in any approved manner, it is shown pivoted horizontally on a spindle 60, fitting in the socket piece 62, see Fig. 4, held in a bracket 63, attached to the top of a spindle 14, which latter is held-in the socket-piece 64 fastened to a bar 65, that is in turn bolted to a sleeve 15 by screws 67, which sleeve 15 is mounted on the main frame 23 of the range-finder. Near the top of the vertical spindle 14 is a collar 68,and above this a radial arm 8 to turn the spindle and telescope 3, the several parts at the top being clamped'by a nut 69. a The arm or lever 8 has a toothed sector 7 0 at its outer end, into which meshes an accurately formed tangent-screw 7 2 covered and protected by a guard plate 73. This tangent-screw 7 2 is an integral part of the spindle 74, so that,-as the latter is turned, the disks-82, 83 and 84 and the telescope are simultaneously operated.

- The disks 82, 83 and 84 all turn loosely on the stud 98, see Fig. 2, and their readings are lutions of the s indle 74; the second disk 83 indicates fourt s of revolutions; and the third disk 82 indicates the revolutions of the movement inthe registering disks 83 an 84,

the intermediate gear-wheels are provided that drive these disks on adjustable supports 101 102, which at their outer ends are a as follows: The front disk 84 indicates revoheld by the studs 103 and 104, and at their inner ends have elongated slots 105 to permit some movement on the spindle 74, upon which the supports are mounted. In this manner, theteeth of the intermediate gearwheels 90, 92 and 97 can be set into mesh and adjusted in case there is any wear by use, so that movements right and left of the disks 83 and 84 will be accurate and will not vary.

The index-pointer 105 is made adjustable by'means of an extension 99 slotted at its extremity and held by screw 106, as shown in Fig. 1.

The spindle 74 is turned by a crank 79 of a wheel 80. End movement of the spindle 74 is prevented by the bearing 78 which contains a beveled collar in the usual manner of such bearings, see Figs. .2 and 3. The numeral 4 indicates the casein which the registering mechanism is inclosed.

The register of the movement of the telescope 3 is observed through aperture 100 in the casing 4, as shown in Fig. 1, and is recorded in tables of reference when the instrument is experimentally calibrated, such record being carefully preserved for future use, so that distances can be accurately determinedtherefrom, so long as the instrument remains in true adjustment.

In the case of moving objects, such as vessels, after their distance shall have been ascertained, the movable telescope 3 can be slowly turned to coincide with the rate of their movement, and by comparing the are described "by the arm 8 with a period of time, the rate can be computed, the direction or angle of the objects movement being known or assumed.

I claim: 1

1. The combination of a plurality of disks,

,a spindle, a pitch-chain extending from the spindle to one disk, transmission-gears for imparting motion from the spindle to the other two disks, the disks having scales thereon showing whole and multiple revolutions of the spindle and fractions thereof.

2. The combination of a plurality of disks, a spindle, a pitch-chain extending from the spindle to one disk, transmission-gears for imparting motion from the spindle to the other two disks, the disks having scales thereon showing whole and multiple revolutions of the spindle and fractions'thereof, adjustable supports pivotally mounted concentric with the spindle and carrying certain of said transmission-gears, said supports having elongated slots, and studs passing through said slots for holding the supports in their adjusted positions.

In testimony whereof, I aflix my signature, as administratrix of the estate of John G. Hanks, deceased.

ELIZA P. BROWN,

Adrministratflw of the estate of John G.

Ham/cs, deceased. 

